49results about "Intravenous devices" patented technology

The invention is a dilation catheter which comprises an elongated catheter shaft, a guide wire tube, and an angioplasty balloon. The distal end of the balloon is attached to the distal portion of the guide wire tube, and the proximal portion of the balloon is attached to the distal portion of the catheter shaft. A stiffening wire is attached to the inner wall of the catheter shaft at a plurality of points along its length. The distal extremity of the guide wire tube is decreased in size relative to the proximal portion of the guide wire tube. A fluid is contained within the guide wire lumen.

A catheter system and method is provided for overcoming various problems commonly associated with the application of regional anesthesia. Disclosed herein are several embodiments for providing continuous regional anesthesia. In general, the catheter system includes an epidural catheter, an epidural needle, tubing for optional fluid administration, an attached conductive wire (for connection to a nerve stimulator) and a catheter introducer, which is integrated within the proximal hub of the insulated needle. The embodiments may differ in several ways.

A milk expressing device capable of simulating a baby's suckling includes first and second vacuum sources, a throttle hole, a solenoid relief valve, first and second tubes, a breast shield, and a control circuit board. The first tube connecting the first vacuum source and the breast shield is provided with the throttle hole to communicate with the atmosphere. When the first vacuum source is turned off, negative pressure in the first tube and the breast shield disappears slowly through the throttle hole. The second tube connecting the second vacuum source and the breast shield is provided with the solenoid relief valve to communicate with the atmosphere. When the solenoid relief valve is activated, negative pressure in the second tube and in the breast shield is rapidly removed. The control circuit board controls the first and second vacuum sources and the solenoid relief valve.

An exemplary device and method for microfluidic transport is disclosed as providing inter alia a passive check valve (100), a fluid inlet channel (210), a fluid outlet channel (220) and a pumping cavity (240). The fluid inlet channel (210) is generally configured to flow a fluid through the check valve (100). The check valve (100) generally provides substantially passive means for preventing or otherwise decreasing the incidence of purged outlet fluid re-entering either the pumping cavity (240) or the fluid inlet channel (210). Accordingly, the reduction of backflow generally tends to enhance overall pumping performance and efficiency. Disclosed features and specifications may be variously controlled, adapted or otherwise optionally modified to improve micropump operation in any microfluidic application. Exemplary embodiments of the present invention representatively provide for substantially self-priming micropumps that may be readily integrated with, for example, existing portable ceramic technologies for the improvement of device package form factors, weights and other manufacturing and/or device performance metrics.

A low profile pump inlet for an implantable blood pump is disclosed. The low profile pump inlet has an inflow diffuser for attachment to a conduit bearing an inflow of a fluid such as blood and an outflow orifice in fluid connection with the diffuser. The outflow orifice is configured to direct the fluid from the diffuser into a pump such as an implantable blood pump. The low profile pump inlet helps to suppress the effects of upstream pipe bends on the blood traveling through the inlet. The inlet thus provides a flow having a substantially uniform velocity profile into the blood pump.

An integrated infusion management system provides for stable support of components attached to the system, even when the system is mobile. The system is optionally a mobility assist or walker for a patient who is attached to any number of medical components. A central trunk connects to a two-sided base that does not interfere with patient motion. The trunk may be angled with respect to vertical and oriented to support medical components in a configuration that is tip-resistant. The system is optionally deployable to facilitate conversion between a compact storage configuration and a stable deployed configuration. In an embodiment, additional deployable features include holding arms for holding various medical components, wheels, mobility arms and handles. Also provided is a novel wheel system with deployable wheels and methods associated with providing compact storage of any one or more of the systems presented herein.

There is provided an apparatus (10) and method for maintaining manuary access to a sufflated body cavity of a patient through a fenestration formed in the patient's body tissue during a minimally invasive surgical procedure. The apparatus (10) generally comprises a seal section (100) and a sheath section (200) coupled thereto. The seal section (100) includes an endless loop portion (110) that defines an opening (120). The sheath section (200) includes a mouth portion (210), a glove portion (230), and a pliable intermediate portion (220) extending therebetween. The intermediate portion (220) maintains in reconfigurable manner a substantially gas impermeable barrier between the mouth and glove portions (210, 230) when the glove portion (230) is passed through the opening (120) into the body cavity responsive to manuary actuation. The passage of the glove portion (230) through the opening (120) biases at least a part of the intermediate portion (220) to engage the patient's body tissue immediately bounding the fenestration, whereby the sufflation of the body cavity is substantially preserved during the minimally invasive surgical procedure.

A light source locating and visualization apparatus comprises one or more than one LEDs capable to radiate a red light source with a wavelength of 600˜650 nm to locate superficial veins or specific structures; and a method of locating superficial veins with a LED light source comprises to proceed a skin-tightly radiating by using the source locating and visualization apparatus to emitting a red LED light source with wavelength of 600˜656 nm; to produce a lateral scattering and illumination effect by way of emitting red LED light source penetrating through a fat structure to cause reflection and scattering; and to locate superficial veins by naked eyes due to said superficial veins capable of absorbing red light spectrum easily and appearing as a located blood vessel shadow under the lateral scattering and illumination effect; therefore, physicians and nurse are capable by naked eyes to see the size, curve, and bifurcation of subcutaneous blood vessels visually and then select an appropriate injection position along the blood vessel for intravenous puncture easily.

An immersion exposure apparatus projects and transfers a pattern onto a photosensitive substrate through a projection optical system with a liquid being supplied to the immersion space between the projection optical system and the photosensitive substrate. The immersion exposure apparatus includes a temperature detector which detects the temperature of the liquid in the immersion space, and a controller which controls, on the basis of an output from the temperature detector, the position and/or tilt of a movable unit that influences the imaging performance of the pattern to be projected onto the photosensitive substrate.

A sputum collecting device includes a bag attached to a cover and disposed in a container for receiving and collecting a sputum and for forming a peripheral space between the container and the bag, the cover includes an inlet for guiding the sputum from a patient into the bag and includes a tubular member communicative with the container and the peripheral space that is formed between the container and the bag, and a vacuuming source for drawing the air in the bag and the peripheral space that is formed between the container and the bag, and for drawing the sputum through the inlet of the cover and into the bag, and then for collecting the sputum in the bag.

An apparatus and method for harvesting bone and bone marrow are provided. The apparatus may include a driver operable to be releasably engaged with an intraosseous device. The intraosseous device may include a cannula having a first end operable to penetrate bone and bone marrow and to allow retrieval of portions of bone and/or bone marrow. The cannula may have a second end operable to be releasably engaged with bone marrow sampling equipment. The apparatus may include a removable trocar. The removable trocar may have an inner channel operable to convey portions of bone and/or bone marrow. The removable trocar may have an inner channel and a side port communicating with the inner channel. The removable trocar may have a first end operable to penetrate bone and bone marrow.

The invention provides a medical body fluid metering and control system. The system comprises a drainage module which is a hollow tube body with upper and lower openings, a metering module which comprises a metering container and a control unit, and a collection module used for collecting a body fluid discharged by the metering container. The control unit comprises a controller and a driver which are electrically connected; the metering container comprises a fluid level sensing part and a fluid control part equipped with an electromagnetic coil; the fluid level sensing part is electrically connected with the controller; the driver is electrically connected with the electromagnetic coil; the metering container is provided with a fluid inlet and a fluid outlet; when a fluid level in the metering container reaches a set fluid level, the fluid level sensing part sends a signal to the controller, and the controller enables the electromagnetic coil to be powered on and off or enables a current of the electromagnetic coil to be reversed, thereby driving the fluid control part to open the fluid outlet for enabling the body fluid of unit volume to be discharged from the metering container; and meanwhile, the controller accumulates a fluid discharge frequency, collects and calculates acquired information and outputs the collected and calculated information to a reporting system.

A method for measuring an integrated circuit (IC) structure by measuring an imprint of the structure, a method for preparing a test site for the above measuring, and IC so formed. The method for preparing the test site includes incrementally removing the structure from the substrate so as to reveal an imprint of the removed bottom surface of the structure in a top surface of the substrate. The imprint can then be imaged using an atomic force microscope (AFM). The image can be used to measure the bottom surface of the structure.

An adjustable infusion catheter includes a flexible tube containing one or more axial lumens that allows fluid to flow from the proximal end of the catheter to the distal end. A syringe or infusion pump is the usual pressure source for fluid at the proximal end. A plurality of small-diameter holes are provided in a fenestrated area near the distal end of the tube to disperse fluid throughout a targeted region within the patient's body. The length of the fenestrated area of the catheter body is adjusted by a slidable sheath which can be positioned along the length of the fenestrated area so that its exposed length substantially matches the targeted region. The ends of the slidable sheath include a seal portion to prevent leakage around the ends of the sheath. Heat shrinkable plastic material can be used to form the sheath and the end seals.

The invention relates to the technical field of medical instruments, in particular to a postoperative nursing drainage device for craniocerebral operation for neurosurgery department. The device comprises a drainage box, and an induced draft fan is arranged above the drainage box and communicated with the interior of the drainage box through a connecting pipe. When the device needs to be used, theinduced draft fan is started, the induced draft fan generates negative pressure to drain a drainage liquid, the drainage liquid enters the drainage box along a drainage tube, and then enters a liquidstorage bottle on the left side through a liquid inlet hole in the left side; when the liquid storage bottle on the left side is full, a blocking plate can move leftwards, the liquid inlet hole in the left side is closed and a liquid inlet hole in the right side is opened, and the drainage liquid enters a liquid storage bottle on the right side through the liquid inlet hole in the left side; andsimilarly, after the right-side liquid storage bottle is full, the blocking plate moves rightwards and can switch to the left-side liquid storage bottle, drainage does not need to be stopped, normal operation of an operation is guaranteed, and when the liquid storage bottle is full, a bell rings to remind in time, so that forgetting caused by negligence of medical staff is avoided.

The present invention relates to a power unit for a medicament delivery device comprising a power body (24) having opposite proximal and distal ends, a plunger rod driver (44) coaxial and movably arranged in relation to said power body, a plunger rod (72) coaxial and movably arranged in relation to said plunger rod driver, a force spring element (78) operably connected between said plunger rod (72) and said power body; wherein the plunger rod driver comprises first holding elements (66, 68) arranged to interact with second holding elements (76) on said plunger rod (72) and with the power body for releasibly holding said plunger rod (72) with said force spring element (78) in an injection tensioned state; third holding elements (56) arranged to interact with fourth holding elements (41) on said power body (24) for releasibly holding said plunger rod driver in a penetration tensioned state; first attachment elements (52) arranged to interact with second attachment elements (108) on a medicament container holder (92), capable of attaching the two attachment elements together; and first blocking elements (62) arranged to interact with second blocking elements (43) on said power body (24), for blocking any movement of said plunger rod driver (44) in the distal direction after the plunger rod driver is released from a penetration tensioned state.

The invention discloses a needle-cylinder-state detection device for a high pressure injector. The needle-cylinder-state detection device comprises a rotating part and a fixing part. The rotating part comprises a rotating body, a buckling block, a plurality of grooves formed in the other end of the rotating body, a first limiting block arranged on the outer side of the rotating body, a second limiting block arranged on the outer side of the rotating body and an opto-coupling light shielding clamping jaw arranged between the first limiting block and the second limiting block; the fixing part comprises a fixing body, a first limiting column, a second limiting column, a first detection optocoupler adjacent to the first limiting column, a second detection optocoupler adjacent to the second limiting column and elastic column plug pieces arranged on the fixing body and fixedly matched with the grooves. According to the needle-cylinder-state detection device for the high pressure injector, needle-cylinder state detection is free of blind area, using is convenient, and the reliability of needle-cylinder detection signals is guaranteed.

Systems and methods for a multi-layered peel-away sheath assembly for insertion of a blood pump including a sheath hub and a sheath body having a proximal end that is connected to the sheath hub, anda distal end. The sheath body comprises multiple layers including a reinforcing layer. The reinforcing layer improves flexibility and kink resistance of the assembly The reinforcing layer can compriseLCP, PEBAX, stainless steel, Nitinol, or Kevlar. The reinforcing layer may be a laser-cut hypotube or a braided or coiled filament. The first layer material and the third layer material are thermoplastics, including PEBAX or TPU. The reinforcing layer has at least one discontinuity, which is aligned with peel-away lines in the sheath body to allow an operator to peel-away the assembly. The peel-away lines are formed of inner, outer notches, or both. The sheath hub also includes a discontinuity to allow the sheath hub to peel-away.

Methods for administering pressure changes to a user for the treatment and prevention of diseases and conditions are disclosed herein. Methods of administering Cyclic Variations in Altitude Conditioning Sessions (CVAC Session(s)) for the treatment of steroidogenesis, steroid levels, and treatment of serum lipid levels are disclosed herein. Also disclosed herein are methods of administering CVAC Session(s) for the treatment of steroid levels and steroidogenesis associated with HIV infection.

A body implantable lead system includes an over-the-wire lead with a longitudinally extending lumen. A hollow stylet having an outer peripheral surface is introduced into the lumen and an annular resilient blood seal within the lumen may be sealingly positioned between the outer peripheral surface of the stylet and the lead to prevent flow of blood beyond the blood seal and into the lumen in a proximal direction. A guidewire is slidably received within the hollow stylet and includes a tip end which may project through the passage at the distal end of the lead such that relative movement of the guidewire and stylet within the lead is enabled while avoiding friction between the blood seal and the guidewire. Either the guidewire or the stylet may be preshaped for proper placement of the lead for engagement with the body tissue and surrounded by a semi-rigid retractable sheath.

The invention discloses a self-recognition venipuncture robot system, and the system comprises a puncture robot, a guide robot, a blood flow stopper, a posture adjusting grab handle, a needle tip correction box, a bottom plate and an arm support. The puncture robot is composed of a rotary table robot and a puncture tail end and arranged on one side of the bottom plate, the guide robot arranged on the other side of the bottom plate is composed of an image module and a two-coordinate robot, the posture adjusting grab handle is arranged between the puncture robot and the guide robot, and the arm support is arranged behind the posture adjusting grab handle in parallel; the blood flow stopper is arranged behind the arm support in parallel, and the needle tip correction box is arranged on one side of the puncture robot and fixed to the bottom plate. The automatic venipuncture device can automatically complete venipuncture, has better accuracy, scientificity and safety compared with artificial venipuncture, and can protect medical staff against life and health threats and injuries when venipuncture is conducted on a virus carrier, an infectious disease patient and a person to be injected with nuclear medicine.

A re-closable valve (1, 100, 700, 800) for use in sterile fluid transfer has a body (5) with open entry and exit sides (2, 3) and a passageway (4) for fluid therebetween. The entry side is connectable to an opening of a separate vessel and the exit side is connectable to downstream processing. The entry side includes a first rupturable seal (5b, 500) blocking the opening of the entry side. A piston (9) is connected to an actuator (7) via a cam mechanism (8, 85, 10) which moves the piston (9) axially in the passageway (4) and to the first seal (5b, 500). On movement of the piston (9) during a first actuation, the first seal (5b, 500) is torn free from the entry side to open the valve for fluid transfer. A sharp rim (15) surrounds the opening of the entry side and a curved surface area (193) encircles the piston exterior proximal the entry side. The valve (1, 100, 700, 800) can be re-closed by moving the piston (9) during a subsequent actuation thus engaging the sharp rim (15) with the curved surface area (193) which plastically deform to from a second seal. Arrangements are included to enable the valve (1, 100, 700, 800) to be multiply re-opened and re-closed, if desired.

The present invention relates to kits and prefilled syringes comprising pharmaceutical formulations comprising a nalbuphine ester prodrug homogenously dissolved in a solution comprising a pharmaceutically acceptable oil and an oil-miscible retaining solvent, as well as methods of treating pain using such formulations.